Alexander Mosaic (c. first century AD), ancient Roman floor mosaic from the House of the Faun in Pompeii showing Alexander fighting king Darius III of Persia in the Battle of Issus

"Alexander the Great (356-323 BCE) inherited the kingdom of Macedon from his father, Philip, at the age of twenty. After subduing Greece, he then embarked on the conquest of Persia, which led him through Asia Minor, North Africa, Asia, and into the Indian subcontinent.He was turned back at the river Beas in present-day Pakistan due to his army being homesick. Alexander was a master of combined-arms warfare, fixing the enemy in place with his phalanxes and then leading his brilliant 'Companion Cavalry' on daring flanking maneuvers against the pinned foe. By the time of his death at the age of 33, Alexander had created one of the largest empires in history."

Avoid rallying at 45 degree angles, since your Troops are defenseless until meeting the rally point, and it is very possible Cannon Towers, and Troops can kill Alexander the Great and your Troops if you pass by the defensive Buildings.

If you are attacking without Tanks with your Troops, Alexander the Great can take up some of the damage, and is best used to take out Mortar fire. Beware not to rally your troops with Alexander the Great to a Mortar that can still hit your troops, since Alexander the Great will be the only one left alive.